The perfect time would be November 2011. This is when I think it will be released based on Nintendo's general 5 year console lifespan.
It doesn't look like Nintendo is very interested in supporting the Wii much more, that is probably because they are already developing software for their new console. I would like to see something that gets integrated well with the 3DS, but I know it won't be the Wii.
I describe myself as a little dose of toxic masculinity.